Body wisdom: detecting birth by smell.
D000739:Anecdotes as Topic; D005260:Female; D006801:Humans; D007747:Labor Stage, First / Q000502:physiology; D008880:Midwifery / Q000592:standards; D009321:Natural Childbirth / Q000451:nursing*; D009812:Odorants; D011247:Pregnancy; D012903:Smell; D013997:Time Factors